|New Modeling of UPFC for Power Flow Study and Setting Parameters to Increase Voltage Level and Reduce Power Losses|
The Unified Power Flow Controller (UPFC), is one of the most complex Flexible alternating-current transmission systems (FACTS) devices in a power system. The UPFC is the shunt-series device that provides power flow control together with separate voltage control. The objective of this paper is propose a UPFC model that can be incorporated into existing MATLAB based MATPOWER for power flow studies. Power flow is the analysis to determine the steady-state magnitude and angle voltages at all buses o...
Keywords: UPFC; Injection model; Power Flow; MATPOWER; MATLAB
|Modeling, Analysis and Simulation of VFT for Power Flow Control through Asynchronous Power Systems|
Variable Frequency Transformer (VFT) is a controllable bi-directional transmission device that can transfer power between asynchronous networks. It avoids both HVDC link and FACTS based power transmission control system. Basically, it is a rotatory transformer whose torque is adjusted in order to control the power flow. In this paper, a simulated model of VFT is used as a controllable bidirectionalpower transmission device that can control power flow through the connected asynchronous power syst...
Keywords: Variable frequency transformer (VFT); MATLAB; Asynchronous power systems; Power flow
|Optimal power flow in microgrid - Darakhshan Rokhsari, Mirsadraddin|
This thesis is about the optimal power flow in microgrid with using multi-objective function. The thesis puposed new algorithm for optimal power flow plus new desicion about the determination of droop characteristic at optimized point.
Keywords: microgrid; power flow; distributed generator; droop characteristic; P-f controller
|Line Losses in the 14-Bus Power System Network using UPFC|
Controlling power flow in modern power systemscan be made more flexible by the use of recent developmentsin power electronic and computing control technology. TheUnified Power Flow Controller (UPFC) is a Flexible ACtransmission system (FACTS) device that can control all thethree system variables namely line reactance, magnitude andphase angle difference of voltage across the line. The UPFCprovides a promising means to control power flow in modernpower systems...
Keywords: FACTS (Statcom; TCSC) - Optimal power flow algorithm (N-R Method) – Mat lab
|Security Constrained UCP with Operational and Power Flow Constraints|
An algorithm to solve security constrained unit commitment problem (UCP) with both operational and power flow constraints (PFC) have been proposed to plan a secure and economical hourly generation schedule. This proposed algorithm introduces an efficient unit commitment (UC) approach with PFC that obtains the minimum system operating cost satisfying both unit and network constraints when contingencies are included...
Keywords: Unit commitment; Dynamic Programming; Newton Raphson; Lagrangian multiplier; Economic dispatch; optimal power flow; Contingency Analysis
|Review of Active Reactive Power Flow Control Using Static Synchronous Series Compensator (SSSC) - www.ijrde.com|
The control of power and the usable capacity enhancement of present as well as new and upgraded line can be effectively done by FACTS technology. In this paper describe the active and reactive power flow into the line for the purposed of compensation as well as enhancement of power transmission capability of transmission line. The active and reactive power flow control through a transmission line by placing SSSC at the middle of power system...
Keywords: Power Flow Control; Static Synchronous Series Compensator; Prashant Dhoble; Arti Bhandakkar
|7. Electrical EEE IJEEE Numerical Methods In Load Flow Adejumobi I Nigeria|
Two primary considerations in the development of an effective engineering computer program are the formulation of a mathematical description of the problem and the application of a numerical method for a solution. The mathematical formulation of the load flow study results in system of algebraic nonlinear equations, and owing to this the numerical solution is reached by iteration. The different mathematical techniques used for load flow study are Gauss-Seidel, Newton-Raphson, Decoupled and...
Keywords: Fast Decoupled Gauss; Seidel; Iteration; Load Flow; Newton Raphson; Numerical Solution; Power Flow
|Biogeography Based Optimization Approach for Optimal Power Flow Problem Considering Valve Loading Effects|
This paper presents a novel Biogeography Based Optimization (BBO) algorithm for solving multi-objective constrained optimal power flow problems in power system. In this paper, the feasibility of the proposed algorithm is demonstrated for IEEE 30-bus system with three differentobjective functions and it is compared to other well established population based optimization techniques. A comparison of simulation results reveals better solution quality and computation efficiency of the proposed algo...
Keywords: Biogeography; Optimal Power Flow; Particle Swarm Optimization; Genetic Algorithm; Evolutionary Programming; Mutation; Migration
|1. Electrical IJEEE PERFORMANCE IMPROVEMENT OF TRANSMISSION Ramprasad|
Power losses and voltage instability are major problems in present power systems. It has become more complex day by day due to less security and reliability. Flexible AC transmission systems (FACTS) controllers have been mainly used for solving various power system steady state control problems. Flexible AC transmission systems or FACTS are devices which allow the flexible and dynamic control of power systems and enhancement of system stability using FACTS controllers...
Keywords: Voltage Stability; Flexible AC Transmission Systems (FACTS); Unified Power Flow Controller (UPFC); Genetic Algorithm (GA); Particle Swarm Optimization (PSO)